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A new book shows influential dressing room leaders are more important than we thinkCredit:
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It may seem strange to imagine that a decision over a player with only five Premier League appearances all season could be pivotal to Chelsea’s future but that would be one logical conclusion from a fascinating new body of research about greatness in a sports team.

John Terry, so the theory goes, has been more influential in Chelsea’s finest era of success than any of the 11 managers who have placed such faith in him to embody their message.